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CVE-2020-21050Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.
- 6.5MediumCVSS base score
- 1.6%Exploitation in 30 daysEPSS · top 25% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.
Timeline
ID reserved
By mitre
- 13 months later
· 13 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.6% · top 25% of all CVEs (13 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
n/a
- affected n/a
References
References6
- https://cwe.mitre.org/data/definitions/121.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/saitoha/libsixel/blob/master/ChangeLog (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/saitoha/libsixel/releases/tag/v1.8.5 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/saitoha/libsixel/issues/75 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee (opens in a new tab)x_refsource_MISCx_transferred
- https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-13829 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-21050)Record last updated .